FDIC Cert #4506 · Sioux City, Iowa · Est. 1884

The Security National Bank of Sioux City, Iowa - FDIC Bank Health Profile

A community-scale look at The Security National Bank of Sioux City, Iowa's own numbers, pulled straight from its quarterly FDIC Call Report.

Compiled from official public sources by the publisher.
$1.7B
Total assets
A
Health grade · Excellent
1.55%
Return on assets
12.4%
Tier 1 capital

Data updated July 2026

The verdict

The Security National Bank of Sioux City, Iowa earns a PlainBankData health grade of A (92/100), with well-capitalized at 12.38% Tier 1, profitable at 1.55% ROA, efficient (56% cost ratio).

#673
largest of 4,313 FDIC banks by assets
84th
percentile by asset size, nationally
12.38%
Tier 1 ratio - above the 10% well-capitalized line
76th
percentile for profitability (ROA), nationally

The grade above reflects PlainBankData's own read of the bank's regulatory filings, not an FDIC judgment, deposit coverage stays at $250,000 per depositor, per category, unaffected by it.

FDIC Call Report plate

Cert 4506 · IA A · 92/100

GRADE-A · UPPER-Q · PHOTO-FINISH · TIER1-WELL · TEXAS-CLEAN · ROA-STRONG · SIZE-REGIONAL · BOOK-FULL

  • GRADE-A A (92/100)
  • UPPER-Q #545/4307
  • PHOTO-FINISH Farmers National Bank · KS
  • TIER1-WELL 12.4% Tier 1
  • TEXAS-CLEAN 2.3% Texas
  • ROA-STRONG 1.55% ROA
  • SIZE-REGIONAL $1–10B
  • BOOK-FULL 9/9 fields

Nearest health peer outside Iowa: Farmers National Bank, KS (±0 health pts)

Instrument codes from this bank’s FDIC Call Report sheet: grade band, health peer rank, photo-finish gap, Tier 1, Texas Ratio, ROA, size band, and book completeness. Not an official FDIC rating.

Health-score neighbourhood around The Security National Bank of Sioux C…

Lowest and highest poles plus nearest scored peers outside Iowa, not a full FDIC corpus board reprint.

Morgan Stanley Bank,… · UT ·…100/100Exchange Bank & Trust · KS ·…92/100Farmers National Bank · KS ·…92/100First National Bank… · LA · …92/100The Howard State Ban… · KS ·…92/100The Security Nationa… · IA ·…92/100Tioga-Franklin Savin… · PA ·…0/100
PlainBankData health composite · neighbourhood around The Security National Bank of Sioux C… · July 2026

What The Security National Bank of Sioux C…'s Call Report plate shows

The Security National Bank of Sioux City, Iowa (FDIC Cert #4506) carries a PlainBankData health grade of A at 92/100, built only from this bank's own Call Report Tier 1 capital, ROA, Texas Ratio, and efficiency inputs. On the scored corpus it sits at health rank #545 of 4,307. Tier 1 capital prints at 12.38%, clearing the 10% well-capitalized line. The Texas Ratio is 2.31%, inside the sub-50% band analysts treat as healthy. Return on assets is 1.55%. Balance-sheet scale is $1.7B, 673rd of 4,313 FDIC-insured banks by assets. The nearest cross-state health peer is Farmers National Bank (KS), tied on the composite. These are instrument codes from the Call Report sheet, not an official FDIC CAMELS rating, and insured deposits stay protected to $250,000 per depositor per ownership category regardless of grade. Compare the plate stamps against the score breakdown and the health-score neighbourhood before treating any single ratio as decisive.

State failure history around The Security National Bank of Sioux C…

4 FAILURE resolutions in Iowa since 2000 (3 since 2008)

The Security National Bank of Sioux City, Iowa's home state sits in the middle band of post-2000 FAILURE counts (4; 3 since the 2008 crisis window). Recent named resolutions below are Failed Bank List rows for this state only; The Security National Bank of Sioux City, Iowa remains an active FDIC-insured reporter.

  • CITIZENS BANK SAC CITY, IA 2023 → IOWA TRUST & SAVINGS BANK
  • POLK COUNTY BANK JOHNSTON, IA 2011 → GRINNELL STATE BANK
  • VANTUS BANK SIOUX CITY, IA 2009 → GREAT SOUTHERN BANK

Source: FDIC Failed Bank List (resolution_type=FAILURE only; ASSISTANCE excluded). See the depositor failures guide and Iowa banks.

How The Security National Bank of Sioux City, Iowa's 92/100 score adds up

Each factor is scored from this bank's own FDIC Call Report figures, then summed to the composite health score.

0/100100/100National avg77/10092/100
The Security National Bank of Sioux City, Iowa's composite health score
Tier 1 Capital Ratio (12.38%) 35/40
Return on Assets (ROA) (1.55%) 25/25
Texas Ratio (2.31%) 20/20
Efficiency Ratio (55.70%) 12/15

92 of 100 points earned across four weighted factors. See our methodology for the full scoring formula.

Balance sheet at a glance

Total Assets

$1.7B

Total balance-sheet footings

Total Deposits

$1.3B

Customer-funded liabilities

Net Loans

$1.1B

Outstanding loan book

Net Income

$26M

Bottom-line earnings

Capital adequacy vs federal thresholds

0% 3% 6% 9% 12% 15% CET1 (≥6.5% req.) Tier 1 (≥8.0% req.) Total (≥10.0% req.) 10.98% 12.38% 13.78%
Basel III capital ratios - The Security National Bank of Sioux City, Iowa

Where The Security National Bank of Sioux City, Iowa ranks

Every one of the 4,307 FDIC-insured banks with a computed health score, bucketed by score. The Security National Bank of Sioux City, Iowa's score of 92/100 falls in the highlighted band.

The Security National Bank of Sioux City, Iowa: health score vs. every FDIC-insured bank

0-100 composite health score, FDIC Call Reports

92 Top 13% higher than 87% of 4,307 FDIC-insured banks

0–10: 3 FDIC-insured banks (0%). Below this entry. 10–20: 6 FDIC-insured banks (0%). Below this entry. 20–30: 26 FDIC-insured banks (1%). Below this entry. 30–40: 36 FDIC-insured banks (1%). Below this entry. 40–50: 98 FDIC-insured banks (2%). Below this entry. 50–60: 279 FDIC-insured banks (6%). Below this entry. 60–70: 777 FDIC-insured banks (18%). Below this entry. 70–80: 1,030 FDIC-insured banks (24%). Below this entry. 80–90: 1,237 FDIC-insured banks (29%). Below this entry. 90–100: 815 FDIC-insured banks (19%). This entry sits in this band. The Security National Bank of Sioux C… 0 100 every FDIC-insured bank with a health score, bucketed by value

Each bar is a band; taller bars hold more FDIC-insured banks. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source FDIC Call Reports · July 2026

The Security National Bank of Sioux City, Iowa's size among FDIC-insured banks

Every one of the 4,307 FDIC-insured banks with reported assets, bucketed by total-asset scale (note the buckets are powers of 10, most banks cluster in the $100M-$1B range). The Security National Bank of Sioux City, Iowa's $1.7B falls in the highlighted band.

Safety ratios for The Security National Bank of Sioux C…

Tier 1 capital ratio
Well-capitalized 10%

12.38% of risk-weighted assets - above the federal "well-capitalized" threshold of 10%.

Tier 1 Capital Ratio
12.38%
Texas Ratio
2.31%
Equity Capital
$200M

What these ratios mean →

Earnings posture at The Security National Bank of Sioux C…

Return on Assets (ROA)
76th percentile nationally
1.55%
Return on Equity (ROE)
13.40%
Efficiency Ratio
55.70%

What these mean →

Income & expense at The Security National Bank of Sioux C…

$77M
Interest Income
$24M
Non-Interest Income
$41M
Non-Interest Expense

Asset quality, Texas Ratio detail

The Texas Ratio compares troubled assets to the capital available to absorb losses. The Security National Bank of Sioux City, Iowa reports a Texas Ratio of 2.31% - comfortably in the healthy band; non-performing loans are a small fraction of the bank’s loss-absorbing capital.

Texas Ratio
Caution 50%

2.31% - lower is safer; 100% is the level at which troubled assets equal loss-absorbing capital.

FDIC Failed Bank List → View The Security National Bank of Sioux City, Iowa on FDIC BankFind →

Top banks in Iowa by total assets

Largest banks headquartered in Iowa
  1. 1
    Principal Bank $9.3B

    Des Moines, IA · Grade A

  2. 2
    Bankers Trust Company $7.5B

    Des Moines, IA · Grade A

  3. 3
    MidWestOne Bank $6.3B

    Iowa City, IA · Grade A

  4. 4
    Hills Bank and Trust Company $4.6B

    Hills, IA · Grade A

  5. 5
    West Bank $4.1B

    West Des Moines, IA · Grade A

Top 5 banks in Iowa ranked by total assets · FDIC Call Report Q4 2025.

Nationwide banks with similar total assets

Nearest other-state banks with ≥$10M assets ($1.7B here), outside Iowa so the neighborhood is not state containment.

Ives Bank $1.7B · CT Main Street Bank $1.7B · MA Journey Bank $1.7B · PA Cape & Coast Bank $1.7B · MA

Source: FDIC BankFind Suite, Call Report (FFIEC 031/041) The Security National Bank of Sioux City, Iowa (FDIC Cert #4506) - Tier 1 capital ratio, total assets, deposits, ROA/ROE · 2025 FDIC Call Reports filed quarterly; latest publicly-available vintage shown. Health grades are PlainBankData's interpretation of regulatory filings and are not official FDIC ratings.

The Security National Bank of Sioux City, Iowa Call Report profile · FDIC Failed Bank List · Iowa FAILURE history · Informational only, not financial advice; consult a licensed professional before acting. See the disclaimer and methodology.

Other banks in Iowa

All Iowa banks →
BankAssetsGradeROA
Principal BankDes Moines $9.3B A 1.24%
Bankers Trust CompanyDes Moines $7.5B A 1.10%
MidWestOne BankIowa City $6.3B A 1.12%
Hills Bank and Trust CompanyHills $4.6B A 1.33%
West BankWest Des Moines $4.1B A 0.94%
Northwest BankSpencer $3.0B B 1.03%
Cedar Rapids Bank and Trust CompanyCedar Rapids $2.9B A 2.83%
Quad City Bank and Trust CompanyBettendorf $2.7B A 1.30%